Question

A sensitive galvanometer like a moving coil galvanometer can be converted into an ammeter or into a voltmeter by connecting a proper resistance to it. Then which of the following statements is not true?

• A. An ammeter is connected in series in a circuit and the potential difference across it is small
• B. An ammeter is connected in series in a circuit and the current through it is negligible
• C. A voltmeter is connected in parallel in a circuit and the current through it is negligible
• D. A voltmeter is connected in parallel in a circuit and the potential difference across it is maximum

Answer 1

Answer: (B)

A galvanometer can be converted into a voltmeter by connecting a high resistance in series with it, while it can be converted into ammeter by connecting a low resistance in its parallel. Ammeter is always connected in series with the source and current through it is always maximum, so statement is wrong.